An ambulator for assisting an individual in walking or standing includes a three-sided base disposed in close proximity to a support surface and a three-sided support structure that is mounted to the base by a pair of transversely spaced apart support posts. In addition, the methods can shorten waiting time and maintain consistency in the process by performing the PR strip and cleaning at the same time in the same chamber. The cell containing the sample is first heated by circulation of the heat carrier. After the active endpoints in the first array have been serviced by dispatching a periodic transaction to the endpoint or by marking a sort level corresponding to the endpoint, a non-periodic transaction may be dispatched to an active endpoint in a second array. Further, the disclosed integrated system includes a processing unit directing signal information to one of a data transmitter receiver and a television signal receiver decoder unit.